Why have my periods stopped?

My last time was within mid november. In early october i changed my type of birth control pill from one near a 7 day break to one that you give somebody a lift every day (with no break), i dream up the new one is call "cerazette". After taking one full packet of these pills (correctly) i had one time of year, then they stopped. I did 2 pregnancy test (both about 1 week apart next to early morning sample, and i followed the instructions correctly too) and both came wager on negative. I don't show any other signs of pregnancy, i haven't gain weight, i don't enjoy a bump, i haven't felt sick and i don't enjoy any cravings so i don't think i'm pregnant. The woman at the sexual vigour clinic said it could be the change contained by pill that has cause my periods to stop Do you reckon this is right? Will my periods return? should i be worried?
Answers:

Ive missed 2 pills in a minute im bleeding??

sometimes if you mess with the pills resembling that, it'll happen... mine disappeared for 1 1/2 years.. it'll come back... savour the break though!

Is this normal?

cause your liver is going to erupt i advise you right away to see a doctor. M.D. Reese

Glycolic acid for acne while pregnant?

When we renovate birth control pills the period can stop for a bit to endow with the body a chance to adjust to the transformation in medication.

If it still doesn't come after the subsequent pack then I would recommend getting rear legs in touch beside the clinic.